The standardization of fifth generation (5G) communications has been completed, and the 5G network should be commercially launched in 2020. As a result, the visioning and planning of 6G communications has begun, with an aim to provide communication services for the future demands of the 2030s. Here, we provide a vision for 6G that could serve as a research guide in the post-5G era. We suggest that human-centric mobile communications will still be the most important application of 6G and the 6G network should be human centric. Thus, high security, secrecy and privacy should be key features of 6G and should be given particular attention by the wireless research community. To support this vision, we provide a systematic framework in which potential application scenarios of 6G are anticipated and subdivided. We subsequently define key potential features of 6G and discuss the required communication technologies. We also explore the issues beyond communication technologies that could hamper research and deployment of 6G.

第五代（5G）通信的标准化已完成，该5G网络应在2020年投入商业运营。结果，对6G通信的愿景和规划已开始，旨在为未来的5G通信需求提供通信服务。 2030年代。在这里，我们提供了6G的愿景，可以作为5G后时代的研究指南。我们建议以人为本的移动通信仍将是6G的最重要应用，而6G网络应以人为本。因此，高安全性，保密性和私密性应该是6G的关键特征，无线研究界应该给予特别重视。为了支持这一愿景，我们提供了一个系统框架，在该框架中可以预测和细分6G的潜在应用场景。随后，我们定义了6G的潜在关键功能，并讨论了所需的通信技术。我们还将探讨通信技术之外可能会妨碍6G研究和部署的问题。